The quantitation of how much time constitutes short and recent varies by disease and by context, but the core denotation of acute is always qualitatively in contrast with chronic, which denotes long-lasting disease (for example, in acute leukemia and chronic leukemia).
View full size image. Thomas Edison is usually credited with the invention of the light bulb, but the famous American inventor wasn't the only one who contributed to the development of this revolutionary technology.
Continuing to improve his design, by November 1879, he filed for a U.S. patent for an electric lamp using âa carbon filament or strip coiled and connected â¦ to platina contact wiresâ. The filament was made from a piece of carbonized thread. From coneption to invention, this is one of Thomas Edison's early light bulbs. By New Yearâs he was demonstrating lamps using carbonized cardboard filaments to large crowds at the Menlo Park laboratory.